Production and growth characteristics of hybrids in the genus Betula: developmental and environmental factors

10.12737/4505 ◽  
2014 ◽  
Vol 4 (2) ◽  
pp. 37-41
Author(s):  
Исаков ◽  
Igor Isakov ◽  
Мацнева ◽  
Mariya Matsneva
Keyword(s):  
Experimental Data ◽  
Environmental Factors ◽  
Literature Review ◽  
Introduced Species ◽  
Woody Plants ◽  
Statistical Processing ◽  
Growth Characteristics ◽  
Genetic Origin ◽  
Edaphic Conditions ◽  
History Of

The data on the growth in height of hybrids between local birches, introduced species, growing in different edaphic conditions are presented. Literature review of the possibility of hybridization and data on artificial hybridization in the genus Betula is provided. Importance of this trend for high-forms in woody plants is noted. The data on the history of hybridization and the opinions of scholars on this issue are given. Statistical processing of the experimental data is made. The data showing the benefits of birch families of specific genetic origin are obtained. On less nutritious soils high-self-fertile forms of birches grow faster.

scholarly journals Scheduling Woody Plants for Production and Harvest

1991 ◽  
Vol 1 (1) ◽  
pp. 30-35 ◽  
Author(s):  
R.C. Beeson
Keyword(s):  
Environmental Factors ◽  
Woody Plants ◽  
Physiological State ◽  
Growth Characteristics ◽  
Woody Ornamentals ◽  
Woody Ornamental

Growth characteristics and marketing of woody ornamentals prevent crop scheduling common in floriculture crops. However, many tasks in the production of woody ornamentals require coordination with the season and/or physiological state of the species. Since most woody ornamental nurseries produce many species or cultivars, a variety of tasks occur concurrently. This review highlights the major tasks required during production for most species of woody plants. The physiological and environmental factors that dictate or influence scheduling are discussed.

Pneumomediastinum: A Rare Presentation of Inflicted Injuries in Infants

2020 ◽  
Author(s):  
Adam Lee ◽  
Adam Bajinting ◽  
Abby Lunneen ◽  
Colleen M. Fitzpatrick ◽  
Gustavo A. Villalona
Keyword(s):  
Literature Review ◽  
Retrospective Review ◽  
Review Of The Literature ◽  
Rare Presentation ◽  
Spontaneous Pneumomediastinum ◽  
Nonaccidental Trauma ◽  
Comprehensive Literature Review ◽  
Healthy Infants ◽  
History Of

AbstractReports of incidental pneumomediastinum in infants secondary to inflicted trauma are limited. A retrospective review of infants with pneumomediastinum and history of inflicted trauma was performed. A comprehensive literature review was performed. Three infants presented with pneumomediastinum associated with inflicted trauma. Mean age was 4.6 weeks. All patients underwent diagnostic studies, as well as a standardized evaluation for nonaccidental trauma. All patients with pneumomediastinum were resolved at follow-up. Review of the literature identified other cases with similar presentations with related oropharyngeal injuries. Spontaneous pneumomediastinum in previously healthy infants may be associated with inflicted injuries. Clinicians should be aware of the possibility of an oropharyngeal perforation related to this presentation.

scholarly journals Correlation of Circular RNA hsa_circ_0001946, hsa_circ_0125589, and Environmental Factors With Hypertension

2020 ◽  
Vol 33 (11) ◽  
pp. 1047-1047
Author(s):  
Wan-yue Liu ◽  
Yi Sun ◽  
Shu-na Huang ◽  
Yu-zhen Lin ◽  
Hong-yan Guo ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Peripheral Blood ◽  
Circular Rna ◽  
Peripheral Blood Lymphocytes ◽  
Normal Weight ◽  
Circular Rnas ◽  
Blood Leukocytes ◽  
Crossover Analysis ◽  
History Of ◽  
The Relationship

Abstract Background To investigate the main environmental factors of hypertension and the relationship between hypertension and circular RNAs in peripheral blood lymphocytes. Methods This was a case–control study. A total of 681 hypertension patients and 485 subjects without hypertension were recruited between April 2017 and October 2018. All participations completed the questionnaire investigation, physical examination, and laboratory detection. Quantitative real-time polymerase chain reaction was used to analyze circRNAs (hsa_circ_0001946 and hsa_circ_0125589) in peripheral blood leukocytes in 84 hypertensives and 84 controls. Multivariate logistic regression and crossover analysis were used to analyze the interaction and association between environmental factors and circRNAs in hypertension. Results After adjusted by gender, age and marital status, overweight/obesity (odds ratio (OR) = 1.66, 95% confidence interval (CI) 1.24–2.22), abdominal obesity (OR = 2.17, 95% CI 1.54–3.04), anxiety (OR = 2.15, 95% CI 1.41–3.28), family history of hypertension (OR = 4.26, 95% CI 3.18–5.70), and higher levels of hsa_circ_0001946 (OR = 4.13, 95% CI 1.85–9.21) were risk factors for hypertension, while levels of hsa_circ_0125589 were not associated with hypertension. Crossover analysis showed that the risk of hypertension was 13.12 times higher (95% CI 3.89–44.23) in overweight subjects with high hsa_circ_0001946 levels compared with normal weight subjects with low hsa_circ_0001946 levels. Further, the risk of hypertension was 17.78 times higher (95% CI 1.88–168.61) in subjects with anxiety and high hsa_circ_0001946 levels. Conclusions Hypertension is the result of both environmental factors and genetic factors. Higher hsa_circ_0001946 levels, overweight and anxiety may increase the risk of hypertension, while hsa_circ_0125589 levels are not related to hypertension.

scholarly journals Intravitreal Silicone Oil Migration Into the Lateral Cerebral Ventricles

2019 ◽  
Vol 3 (6) ◽  
pp. 466-473
Author(s):  
Jessica L. Cao ◽  
Andrew W. Browne ◽  
Thomas Clifford ◽  
Sumit Sharma ◽  
Vivek Patel
Keyword(s):  
Case Report ◽  
Retinal Detachment ◽  
Literature Review ◽  
Current Literature ◽  
Symptom Management ◽  
Silicone Oil ◽  
Cerebral Ventricles ◽  
Oil Migration ◽  
Intraocular Tamponade ◽  
History Of

Purpose: Silicone oil (SO) is often used as an intraocular tamponade in repairs of retinal detachments. It may be associated with complications such as cataract, glaucoma, keratopathy, subretinal migration of oil, fibrous epiretinal and sub retinal proliferations, and oil emulsification. The purpose of this report is to describe a rare phenomenon of intraocular silicone oil migration into the cerebral ventricles, which may later be mistaken for intraventricular hemorrhages on neuroimaging. Methods: Case report with literature review. Results: A patient with a history of retinal detachment repair with intraocular SO presented with headaches. Neuroimaging revealed SO migration to the cerebral ventricles. The patient was treated conservatively with symptom management and headaches resolved. Conclusions: We present a case of intraocular SO migration to the cerebral ventricles and review the current literature. We also propose two mechanisms for this phenomenon.

Transmitting Knowledge across Divides

2016 ◽  
Vol 46 (3) ◽  
pp. 313-359 ◽  
Author(s):  
Marta Jordi Taltavull
Keyword(s):  
Experimental Data ◽  
Quantum Mechanics ◽  
Quantum Theory ◽  
Scientific Understanding ◽  
Resonance Model ◽  
Optical Dispersion ◽  
History Of

One model, the resonance model, shaped scientific understanding of optical dispersion from the early 1870s to the 1920s, persisting across dramatic changes in physical conceptions of light and matter. I explore the ways in which the model was transmitted across these conceptual divides by analyzing the use of the model both in the development of theories of optical dispersion and in the interpretation of experimental data. Crucial to this analysis is the integration of the model into quantum theory because of the conceptual incompatibility between the model and quantum theory. What is more, a quantum understanding of optical dispersion set the grounds for the emergence of the first theories of quantum mechanics in 1925. A long-term history of the model’s transmission from the 1870s to the 1920s illuminates the ways in which the continuity of knowledge is possible across these discontinuities.

scholarly journals Ovarian Torsion after Hysterectomy: Case Report and Concise Review of the Reported Cases

2018 ◽  
Vol 2018 ◽  
pp. 1-3
Author(s):  
Demetrio Larraín ◽  
Andrés Casanova ◽  
Iván Rojas
Keyword(s):  
Differential Diagnosis ◽  
Case Report ◽  
Literature Review ◽  
Rare Event ◽  
Laparoscopic Hysterectomy ◽  
Acute Onset ◽  
Ovarian Torsion ◽  
Adnexal Torsion ◽  
Concise Review ◽  
History Of

Ovarian torsion after hysterectomy is a rare event. The diagnosis of ovarian torsion is challenging because symptoms are nonspecific. We present a case of ovarian torsion 2 years after laparoscopic hysterectomy (LH). Furthermore, we performed a literature review about ovarian torsion after hysterectomy. This case shows that, in cases of acute onset pelvic pain in patients with history of hysterectomy, the adnexal torsion must be kept in mind in the differential diagnosis, especially in those women who had undergone LH.

The natural history of laryngo‐onycho‐cutaneous syndrome: A case series of six pediatric patients and literature review

2021 ◽  
Author(s):  
Christine Prodinger ◽  
Subhanitthaya Chottianchaiwat ◽  
Jemima E. Mellerio ◽  
John A. McGrath ◽  
Linda Ozoemena ◽  
...  
Keyword(s):  
Natural History ◽  
Literature Review ◽  
Pediatric Patients ◽  
Case Series ◽  
History Of

Synaptic Plasticity In Vitro and In Silico: Insights into an Intracellular Signaling Maze

Physiology ◽  
2006 ◽  
Vol 21 (4) ◽  
pp. 289-296 ◽  
Author(s):  
Sriram M. Ajay ◽  
Upinder S. Bhalla
Keyword(s):  
Experimental Data ◽  
Synaptic Plasticity ◽  
Neuronal Activity ◽  
In Silico ◽  
Intracellular Signaling ◽  
Signaling Networks ◽  
Functional Roles ◽  
Current State ◽  
History Of

Synaptic plasticity provides a record of neuronal activity and is a likely basis for memory. The early apparent simplicity of the process of synaptic plasticity has been lost in a flood of experimental data that now implicates some 200 signaling molecules in cellular memory. It is now clear that these signaling networks perform surprisingly sophisticated cellular decisions that weigh factors such as input patterns, location of stimulus, history of activity, and context. Computer models have followed experiments into this maze of molecular detail, often matching closely with their experimental counterparts, but perhaps losing simplicity in the process. Here, we suggest that the merger of models and experiment have begun to restore the earlier simplicity by outlining a few key functional roles for signaling networks in synaptic plasticity. In this review, we discuss the current state of understanding of synaptic plasticity in terms of models and experiments.

Separation in oscillating laminar boundary-layer flows

1971 ◽  
Vol 47 (1) ◽  
pp. 21-31 ◽  
Author(s):  
R. A. Despard ◽  
J. A. Miller
Keyword(s):  
Experimental Data ◽  
Boundary Layer ◽  
Experimental Investigation ◽  
Reynolds Number ◽  
Reverse Flow ◽  
Oscillation Amplitude ◽  
Hot Wire ◽  
Boundary Layer Flows ◽  
Laminar Boundary Layers ◽  
History Of

The results of an experimental investigation of separation in oscillating laminar boundary layers is reported. Instantaneous velocity profiles obtained with multiple hot-wire anemometer arrays reveal that the onset of wake formation is preceded by the initial vanishing of shear at the wall, or reverse flow, throughout the entire cycle of oscillation. Correlation of the experimental data indicates that the frequency, Reynolds number and dynamic history of the boundary layer are the dominant parameters and oscillation amplitude has a negligible effect on separation-point displacement.

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